1 files changed, 26 insertions, 0 deletions
diff --git a/test/dirsize_benchmark.py b/test/dirsize_benchmark.py
new file mode 100644
index 00000000..38f0bfd7
--- /dev/null
+++ b/test/dirsize_benchmark.py
@@ -0,0 +1,26 @@
+import os, time
+class Dirsize():
+	def a(path):
+		return len(os.listdir(path))
+
+	def b(path):
+		for _, dirs, files in os.walk(path):
+			return len(files) + len(dirs)
+
+	def c(path):
+		first = next(os.walk(path))
+		return len(first[1]) + len(first[2])
+
+paths = {
+		'/usr/lib': None,
+		'/usr/bin': None,
+		'/home/hut': None
+}
+
+for key in paths.keys():
+	paths[key] = Dirsize.a(key) # assume Dirsize.a() returns a correct result
+	for algo in ['a', 'b', 'c']:
+		t = time.time()
+		for i in range(4):
+			assert Dirsize.__dict__[algo](key) == paths[key]
+		print("algorithm %s: %20s: %f" % (algo, key, time.time() - t))